In fantasy novels, aptitude levels were usually divided into different levels according to strength and skill levels. The following are some common aptitude levels: 1. Genius: Having extraordinary talent and strength usually allows one to display great strength and skills. 2. The age of the weak crown: refers to a man who is 16 years old and a woman who is 14 years old. People in this age group usually already have considerable strength but have not yet displayed their full strength. 3. Youth: refers to people between the ages of 15 to 30. People in this age group usually already have a certain amount of talent and strength, but they have not yet displayed their full strength. 4. Adult: refers to people between the ages of 31-50. People in this age group usually have considerable strength, but there may be some room for improvement. 5. Master: refers to people between the ages of 51-80. People in this age group usually have extremely high strength and can show great strength and skills, but they may also face some challenges and restrictions. Master: refers to people between the ages of 81-100. People in this age group usually have extremely strong strength and can provide powerful help to the protagonist or others, but they may also face some risks and challenges. It should be noted that different fantasy novels may have different standards for the classification of aptitude levels, and these levels may also change with time and the development of the plot.